Add Wayland switching

debian/changelog

@@ -1,11 +1,17 @@
-raspi-config (20220318) UNRELEASED; urgency=medium
+raspi-config (20220331) bullseye; urgency=medium
 
+  [ Serge Schneider ]
   * Remove nonint whiptail msgbox in do_overlayfs
   * Update get_boot_cli
   * Remove legacy autologin cruft
   * Run systemctl daemon-reload after boot behaviour changes
   * Make autologin changes quieter
 
+  [ Simon Long ]
+  * Add switching for experimental Wayland backend
+  * Fix incorrect detection of read-only boot partition
+  * Force xrandr to reload on non-mutter systems when overscan changed
+
  -- Serge Schneider <serge@raspberrypi.com>  Mon, 07 Mar 2022 09:26:38 +0000
 
 raspi-config (20220303) bullseye; urgency=medium

raspi-config

@@ -2017,6 +2017,36 @@ do_glamor() {
   fi
 }
 
+do_wayland() {
+  DEFAULT=--defaultno
+  CURRENT=0
+  if grep -q "^user-session=LXDE-pi" /etc/lightdm/lightdm.conf ; then
+    DEFAULT=
+    CURRENT=1
+  fi
+  if [ "$INTERACTIVE" = True ]; then
+    whiptail --yesno "Would you like the Wayland backend to be enabled?" $DEFAULT 20 60 2
+    RET=$?
+  else
+    RET=$1
+  fi
+  if [ $RET -eq $CURRENT ]; then
+    ASK_TO_REBOOT=1
+  fi
+  if [ $RET -eq 0 ]; then
+    sed /etc/lightdm/lightdm.conf -i -e "s/^#\\?user-session.*/user-session=LXDE-pi/"
+    STATUS=enabled
+  elif [ $RET -eq 1 ]; then
+    sed /etc/lightdm/lightdm.conf -i -e "s/user-session.*/#user-session=LXDE-pi/"
+    STATUS=disabled
+  else
+    return $RET
+  fi
+  if [ "$INTERACTIVE" = True ]; then
+    whiptail --msgbox "Wayland is $STATUS" 20 60 1
+  fi
+}
+
 get_net_names() {
   if grep -q "net.ifnames=0" $CMDLINE || \
     ( [ "$(readlink -f /etc/systemd/network/99-default.link)" = "/dev/null" ] && \
@@ -3021,6 +3051,7 @@ do_advanced_menu() {
       "A5 Network Proxy Settings" "Configure network proxy settings" \
       "A6 Boot Order" "Choose network or USB device boot" \
       "A7 Bootloader Version" "Select latest or default boot ROM software" \
+      "A9 Wayland" "Enable experimental Wayland backend" \
       3>&1 1>&2 2>&3)
   elif is_pi ; then
     if is_kms; then
@@ -3031,6 +3062,7 @@ do_advanced_menu() {
       "A4 Network Interface Names" "Enable/disable predictable network i/f names" \
       "A5 Network Proxy Settings" "Configure network proxy settings" \
       "A8 Glamor" "Enable/disable glamor graphics acceleration" \
+      "A9 Wayland" "Enable experimental Wayland backend" \
       3>&1 1>&2 2>&3)
     else
     FUN=$(whiptail --title "Raspberry Pi Software Configuration Tool (raspi-config)" --menu "Advanced Options" $WT_HEIGHT $WT_WIDTH $WT_MENU_HEIGHT --cancel-button Back --ok-button Select \
@@ -3060,6 +3092,7 @@ do_advanced_menu() {
       A6\ *) do_boot_order ;;
       A7\ *) do_boot_rom ;;
       A8\ *) do_glamor ;;
+      A9\ *) do_wayland ;;
       *) whiptail --msgbox "Programmer error: unrecognized option" 20 60 1 ;;
     esac || whiptail --msgbox "There was an error running option $FUN" 20 60 1
   fi